.rio domain statistics
.rio has 657 registered domains as of Oct 7, 2026, ranking #550 by size. Since its first check on Feb 24, 2026 it has grown by 4.3% (+27 domains). At its latest check it changed by 0 domains over 56 days, about +0.0% a week.
About the .rio extension
.rio has been in the internet's root zone since May 22, 2014, about 12.4 years, and is operated by Empresa Municipal de Informática SA - IPLANRIO. Its ICANN registry agreement was signed on Feb 27, 2014, 84 days before launch.
Registry details from ICANN's gTLD list.
How .rio compares
By size, .rio sits ahead of 49% of tracked TLDs. Next to its 10 nearest-sized neighbours, .rio out-grew 9; the fastest of that group was .rich at +108.4%.
Biggest moves
Of 10 changes between checks, 5 were gains, 1 was a loss and 4 showed no change. The biggest gain was +15 domains (+2.4%) between Mar 11, 2026 and Jun 3, 2026. The biggest drop was −2 (−0.3%) between Mar 3, 2026 and Mar 11, 2026.
.rio growth trend
Its 657 names are 0.00% of the 89M domains across every tracked extension. Over the 225 days from Feb 24 to Oct 7 it averaged +0.13% a week, or 0 domains a day. Its strongest month on record was June 2026 (+15); its weakest was March 2026 (0). If the latest rate held for 30 days, .rio would reach about 657 domains (a straight-line projection, not a forecast).
.rio domains by month
| Month | Domains | Change |
|---|---|---|
| October 2026 | 657 | 0 |
| August 2026 | 657 | +9 |
| July 2026 | 648 | +3 |
| June 2026 | 645 | +15 |
| March 2026 | 630 | 0 |
| February 2026 | 630 | – |
Every check
| Date | Domains | Change | Growth | Window | Severity |
|---|---|---|---|---|---|
| Oct 7, 2026 | 657 | 0 | +0.0% | 56 days | |
| Aug 12, 2026 | 657 | +9 | +1.4% | 42 days | |
| Jul 1, 2026 | 648 | +3 | +0.5% | 28 days | |
| Jun 3, 2026 | 645 | +15 | +2.4% | 84 days | |
| Mar 11, 2026 | 630 | −2 | −0.3% | 8 days | |
| Mar 3, 2026 | 632 | +1 | +0.2% | 1 day | |
| Mar 2, 2026 | 631 | 0 | +0.0% | 1 day | |
| Mar 1, 2026 | 631 | +1 | +0.2% | 3 days | |
| Feb 26, 2026 | 630 | 0 | +0.0% | 1 day | |
| Feb 25, 2026 | 630 | 0 | +0.0% | 1 day | |
| Feb 24, 2026 | 630 | – | – | first check |
Questions about .rio
How many .rio domains are there?
The .rio zone listed 657 domains when it was last checked on Oct 7, 2026.
Can anyone register a .rio domain?
Generally yes: .rio has no brand-only clause in its ICANN agreement, so registrars sell it to the public. Empresa Municipal de Informática SA - IPLANRIO can still apply eligibility rules.
Who runs the .rio domain extension?
.rio is run by Empresa Municipal de Informática SA - IPLANRIO.
When was .rio created?
May 22, 2014, when it entered the root zone.
Is .rio growing?
.rio went from 630 domains on Feb 24, 2026 to 657 on Oct 7, 2026, a change of +4.3%. Its latest rate is about +0.0% a week.
How big is the .rio domain extension compared to others?
By registered domains, .rio comes in at #550. Its nearest neighbours are .airforce, .neustar, .basketball.